Constitutive theory is a philosophical analysis of the logical interconnections between actors, their actions, and the social practices within which they perform these. It draws on insights from the later work of Ludwig Wittgenstein, as developed and extended by Peter Winch and John Searle. It highlights that actors and their actions can only be understood from within the practices in which they are constituted as actors of a certain kind, who have available to them a specific repertoire of meaningful action. It stresses that the interpretation of their actions involves: understanding the language internal to the practices in which they take place; understanding the rule-boundness of that language; the meaning of its terms; a holist perspective on the practice; and, crucially, an understanding of the ethics embedded in it. It briefly explores the implications of such a philosophical analysis for those seeking to understand the actors and their interactions in global practices. It highlights how international actors (both states and individuals) are constituted as international actors in two major international practices, the practice of sovereign states and the global rights practice. It indicates the guidance constitutive theory might provide for all who would better understand international affairs.
